Connected pipe system and method of making the same



June "l0, 1930. l l, H, KENDALL 1,762,820

CONNECTED PIPE SYSTEM AND METHOD oF MAKING THE SAME F Filed April 16. 1928 me i t" mcs j y N/VENTOR.

BYWa-Lyf/M ATTORNEYS Y Patented June 10, 1930 e .UNiTEDgsTA i l igasze i ZINC.,` F POTSDAM, NEW YORK, A CORPORATION OF vNE YORK coNNEcTED MPE SYSTEM Ann METHOD yoiiiifuminci THE SAME A'ppiica'idnY mea April 16,

My invention relates to a new and improved connected pipesystem and va method of making the same." y f Vr One of he objectsfof my invention is to provide a new and improvedpipe system through whichyany suitable liquidV can be y'forced for the purpose of heating'the same, fcoolingfthe same, or treating it in any other manner.Y

Another object of my invention isy to provide. an improved pipe system 'which "shall be especially .applicable for apparatus used in "the dairy industry, asfor example, apparatus used for heating milk, cooling milk oi' thelike. t l

` Another objevctwof my invention is to vprolvide aconnected pipe system which can be very simply manufactured, and at a minimum cost. l

Other objects of my invention will beset |forth in the following description and drawings which illustrate a preferredv embodiment thereof, fit being understood' that the, above generalistatementof the objects of my invention is intended to generally explain-the saine and not to limit itin any manner. I Fig. lis aside elevation.- Y

` Fig.. 2 is a centralfvertical sectionalview.l Fig. '3 is a view on the line 3-3 of Fig. 2. Fig. L is a sectional viewon the liner-Lt of Fig. 1.

Hitherto in heating or cooling milkfor eX- Y ample, it has been necessary to force the milk to be treated through a connected pipe system composed of a number 'of individual pipes suitably coupled, and to locate theseA pipes which may be Ydesignated as the iirst-Y series, within a second series of pipes through which the heating' orcoolingwater or the like was caused to travel. f Combination pipe systems of this kind have heretofore been expensive to manufacture and install. v t

According to my invention the milk or the Vlike is forced through a series of primary I 5J pipes 1 which maybe designated as the iirst system. VThe pipes 1 vare arranged in pairs; as clearly shown in Fig. 2. Each pair of pipes 1 is provided with a coupling head 2 made of any suitable metal, which canbe soldered or connected in any suitable liquid f head 2 is ground V'are f-ree'from'projecting flanges,it i

192s. serial 110.270,504.

KENDALL .PATENTS,

tight manner to the associatedpair` of kpipes i 1,.without requiring the use of anypacking material.

Aconical surface. YThe coupling Sjhas a cor'- 4The outer end of each coupling so astopresent a smooth t respondingly shaped round surface so that if ,t

this is forced with sufficient pressure against the coupling head 2 a liquid tight joint is produced without theneces'sity of Vusing unsa'nif tary packing materials. A bolt having ahead 5 is 'connected tothe members2 andi-lin any .f t

suitable liquid tightmanner, and a nut-6 is employed for forcing the member 3 into f the position shown in `Fig.'2. The head 5: of y 't thebolt i'sy preferably in the" form of a' nut rwhichv can be readily unscrewedvfrom the said bolt 4C, so that the parts can be easily assem-. bled. Liquid tight joints, can 4be secured without the" vuse v of packing k materials, by meansof solderV or any other'suitable" means.

The-pipes 1 (of the rst series) are located within a` series of i aesf? which ma be desidlongitudinal'slits S, the Vlongitudinalslits S nated as the pipesjof the second series. As clearly shown in Figs.l 2 ande, the pipese` Vabut each other and they are'k providedr with .75K

of two ad'acent li es 7 registeringl with each lother so as to cause the pipes 7 to ferma continuous intercommunicating secondary pipe system.Vv As shown inilig,V l fore-Xample, liquid tight ljoint isfproducedy at; the slitsA SA,

electricarc sothat a metal seal M is deposited around the'edges' lof the openings S, to form a liquid tight joint. In Fig. 2, the respective so"V ,'by "means'o'fi electric welding, namely, by using; an electrode .which is melted byan openings Sof two adj acentfpipes 7 areshown f V4as it .would not 'befdeparting from my invention if the top slit Slof each Lpair wereinade a' lit- 'tle largerthanthe acent bottom opening,

`tofacilitatea rapid application of the weld :'ingarc. It will be noted that the slitsS are long and narrow and the edgesv of these slits are not pressed outk to yform ,flanges A'soft'ha the edges of slits'may be' consideredias `being composed. ofdiscontinuous; straightlline elementsl onth'e outer surfaces of said '.tubes. Likewise since the edges of theslits being" of exactly the same size. AHowevei?, v

to have the connected tubes abuteach other so that a firm and strong structure can be built up. Due to the fact that the length of a slit is greater than its width and since the walls of adjacent tubes abut each other, it is ,difficult to apply the. molten metal in order to eectively connect the slits to each other in a leak-tight manner.

It is particularly desirable, therefore, to have the top slit of each pair a little larger than the adjacent slit as this makes it possible to effectively and quickly use electric welding.

The ends of thesecondary pipes 7 may be closed in any suitable manner.` For example, and as shown in Fig. 2, the. said pipes 7 may be provided with packing heads 8, adapted to receive rings of packing material 9, said rings of packing material 9 being compressed by means of followers 10 which are actuated by nuts 11. Generally speaking, any suitable form of packing gland may be employed for closing the ends of the secondary pipes 7. Since the primary pipes 1 fit snugly within the followers l0, and Ysince they are firmly heldin position within the packing glands o f the secondary pipes 7, the primary pipes l areiirmly held within the secondary pipes 7.

`Likewise, since the secondary pipes 7 are firmly connected by the electric welding, all the pipes form a firmly assembled unit so that it is not necessary to enclose them within any supporting frames Y or the like. It is merely necessary to Vprovide the bottom secondary pipe 7 with base members B of any suitable type, in order to firmlyhold the assembly in the verticalposition illustratedV in Fig. l. Any number of pipes may be assembled to forma convenient unit, andthe entire heating or cooling system may comprise a plurality of such assemblies arranged in any suitable manner. For example, the bottom pipe 7 may have a water inlet I and the top pipe may have a water outlet O. However, it is well known to arrange a series of such pipes with a plurality of water inlets and water outlets and this could be done in any suitable manner without departing from my Vinvention. .j p

V'I have described a preferred embodiment of ymy invention, but it is clear that numerous changes and omissions could be made without v depart-ing from its spirit.

For example, the nuts 1l are provided with longitudinal openings adjacent the peripheries thereof by means of which the said nuts 1l may be manipulated to insert them or remove them, but any other suitable means may so that they can be readily turned.

'l l. A method of connecting a pair of pipes having slits therein, Vwhich consists in placing said slits in alignment and causing said tubes to abut each other, and forming a liquid tight joint at the edges of the said slits by melting a layer of liquid tight material directly-at the peripheries of the said slits, and causing said material to solidify.

2. A pair of pipes having aligned slits in the walls thereof, said pipes having an intermediate layer of solidified material deposited at the peripheries of the said slits to form a liquid tight closuresaid tubes abutting each other and said slots being free from projecting flanges.

3. A pipe system comprising a plurality of `pairs of primary pipes coupled at the ends thereof, each of said primary pipes passing through a secondary pipe of greater diameter, closure means provided at the ends of the secondary pipes, said primary pipes passing through said closure means and being held in position relative to said secondary pipes by said closure means, the secondary pipes being arranged in abutting pairs having aligned slits in their walls intermediate the ends thereof, the edges of said slits being connected by a deposited film of metal to form a liquid tight closure.

4. A pipe system comprising a plurality of pairs of primary pipes coupled at the ends thereof, each of said primary pipes passing through a secondary pipe of greater diameter, closure means provided at the ends of the secondary pipes, said'primary pipes passing through said closure means and being held in position relative to said secondary pipes by said closure means, the secondary pipes being arranged in pairs having aligned slits in their walls intermediate the ends thereof, the edges of said slits being connected by a deposited film of metal to form a liquid tight closure, the said slits being free from projecting flanges and said secondary pipes abutting each other.

In testimony whereof I affix my signature.

IRA H. KENDALL.

`be provided for manipulating the said nuts 

